Radio Frequency Identification Device Operating Methods, Radio Frequency Identification Device Configuration Methods, and Radio Frequency Identification Devices
2 Assignments
0 Petitions
Accused Products
Abstract
An adjustable radio frequency data communications device has a monolithic semiconductor integrated circuit with integrated circuitry, interrogation receiving circuitry provided on the monolithic integrated circuit forming at least part of the integrated circuitry and configured to receive an interrogation signal from the interrogator unit, an antenna electrically coupled to the interrogation receiving circuitry and configured to communicate with the remote interrogator unit, a power source electrically coupled to the integrated circuitry and configured to generate operating power for the communications device, and at least one of the antenna and the interrogation receiving circuitry having reconfigurable electrical characteristics, the electrical characteristics being reconfigurable to selectively tune the at least one of the antenna and the interrogation receiving circuitry within a range of tuned and detuned states to realize a desired receiver sensitivity of the communications device. Additionally, a method for tuning receiver sensitivity and/or transmitter sensitivity according to construction of the above device is disclosed.
109 Citations
78 Claims
-
1-53. -53. (canceled)
-
54. A radio frequency identification device operating method comprising:
-
providing a radio frequency identification device comprising a receiver and a transmitter electrically coupled to an antenna, the receiver and the transmitter being configured to wirelessly communicate with a remote interrogator;
communicating using the radio frequency identification device in a tuned state; and
after the communicating, detuning the radio frequency identification device to provide a reduced communications range of the radio frequency identification device compared with the communicating in the tuned state. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63)
-
-
64. A radio frequency identification device comprising:
-
wireless communications circuitry configured to implement wireless communications with an interrogator;
a memory configured to store data that distinguishes the radio frequency identification device from other radio frequency identification devices; and
a selectively tunable circuit element reconfigurable to modify a wireless communications range of the radio frequency identification device. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71)
-
-
72. A radio frequency identification device configuration method comprising:
-
providing a radio frequency identification device comprising a receiver, a transmitter, and an antenna, the receiver and the transmitter being electrically coupled to the antenna and the radio frequency identification device being configured to wirelessly communicate with a remote interrogator within a first range at a first moment in time and to respond to an interrogation signal received from the interrogator by providing a response signal comprising information uniquely identifying the radio frequency identification device; and
altering the radio frequency identification device at a second moment in time to wirelessly communicate only within a second range less than the first range. - View Dependent Claims (73, 74, 75, 76, 77, 78)
-
Specification